Patent GB-763015-A (GB)
Title: Power gas producing apparatus especially for rocket type propulsion devices
Inventor: HEARN FRANCIS JOHN
IPC: F02K9/48
Filed: 1954-05-25
Abstract: 763,015. Jet-propulsion plant; elastic-fluid turbines; centrifugal pumps. NAPIER & SON, Ltd., D. May 4, 1955 [May 25, 1954], No. 15459/54. Classes 110 (1) and 110(3). [Also in Group XII] The invention relates to power-gas producing apparatus such as a rocket propulsion device, in which one or more reaction or decomposition fluids contained in a reservoir or reservoirs are expelled into a main reaction or decomposition chamber by gas under pressure which is supplied to one side of a movable wall or flexible diaphragm which divides the reservoir into an expulsion gas chamber and a reaction or decomposition fluid chamber. In accordance with the invention, reaction or decomposition fluid is passed to a first subsidiary reaction or decomposition chamber, the gaseous products from which drive a turbine which in turn drives a pump which supplies reaction or decomposition fluid to a second subsidiary reaction or decomposition chamber, the gaseous products from the second chamber passing to the reservoir or reservoirs to expel the reaction or decomposition fluid or fluids therefrom into the main reaction or decomposition chamber. In the apparatus shown, gas under pressure from an external source is supplied to the connection Ll and pressurizes the chambers G<SP>3</SP> and H<SP>3</SP> of the hydrogen peroxide reservoir G and the fuel reservoir H, hydrogen peroxide thereupon flowing through the pipe J and valve P and after bursting the disc P<SP>5</SP> passes to the inlet of the pump O and also through a valvecontrolled passage to the first subsidiary decomposition chamber M<SP>1</SP> where it passes through a catalytic bed and is decomposed into oxygen and steam. The products pass through a nozzle ring M<SP>3</SP> and drive the turbine rotor N finally exhausting to atmosphere through the duct M4. The pump O driven by the turbine N supplies hydrogen peroxide from the inlet O<SP>2</SP> through the duct Q to a second subsidiary decomposition chamber Q<SP>1</SP> the hydrogen peroxide passing through a catalytic bed Q<SP>2</SP> and being decomposed into steam and oxygen. The pressure built up in the chamber Ql bursts the disc Q4 and the gases pass through the duct L into the chambers G<SP>3</SP> and H<SP>3</SP>, thereby pressurizing the hydrogen peroxide storage chamber G<SP>2</SP> and the fuel (e.g. kerosene) storage chamber H<SP>2</SP>. Hydrogen peroxide then flows through the pipes J and after bursting the discs V at the appropriate pressure passes through the valve W and the pipes D<SP>1</SP>, through .the jacket space A<SP>1</SP> around the main reaction chamber A, finally passing through the pipes D<SP>2</SP>, D into the catalytic bed C where it is decomposed into steam and oxygen which pass into the main reaction space. Simultaneously fuel flows through the pipe K and after bursting the disc K<SP>1</SP> passes through the valve X and pipe F to the fuel distributing element E in the main reaction chamber A where it is burnt in the high temperature mixture of steam and oxygen. The gases finally discharge through a propulsion nozzle B. The valves P<SP>6</SP>, X and W are all solenoid-operated. A spring-loaded pressure relief valve R is provided in the gas supply to the pressure chambers G<SP>3</SP>, H<SP>3</SP>. A fuel filling connection is provided at U and a hydrogen peroxide filling connection is provided at U<SP>1</SP>, vent valves being provided at T and S respectively. The supply of hydrogen peroxide to the decomposition chamber M<SP>1</SP> is controlled by a valve P<SP>1</SP> which is dependent on the pressure rise across the pump O.